This activity guides students through sampling, identification and counting of macroinvertebrates sampled in a GLOBE hydrology study site, and understand how the taxa composition found in the sample can be an indicator of water quality and ecosystem...(View More) health. The resource includes 8 field and laboratory protocols. This resource is a protocol within the Hydrology chapter of the GLOBE Teacher's Guide. GLOBE (Global Learning and Observation to Benefit the Environment) is a worldwide, hands-on, K-12 school-based science education program.(View Less)

This lesson is comprised of three parts grouped to enable student understanding of classifying organisms. In part one of the lesson, students classify imaginary organisms represented by a mix of breakfast cereals, candies, nuts, raisins, etc....(View More) according to similar characteristics. Students use a flow chart to show the characteristics by which they divided the imaginary organisms into groups. In part two, students classify a series of single-celled organisms using a dichotomous key. In part 3, students apply skills acquired from the previous activities to create a dichotomous key for their specimens from the first activity. These activities are part of an astrobiology guide called the "Fingerprints of Life" which contains background information for the student, worksheets, extension activities, suggested assessments, and alignment to standards.(View Less)

In this activity, students will observe the relationship between temperature and metabolism. The subjects for this experiment are Saccharomyces cerevisiae, one-celled organisms more commonly known as baker's yeast. By observing the presence of...(View More) carbon dioxide gas generated by the yeast, learners will be able to make inferences about metabolism. This activity is part of an astrobiology guide called the Fingerprints of Life which contains background information for the student, worksheets, extensions, assessment suggestions and standards.(View Less)

This is a lesson about the important materials brought to Earth by carbonaceous chondrites. Learners will conduct experiments that simulate how the carbon material and water from carbonaceous chondrites may have helped early life on Earth, grow...(View More) yeast in mediums that represent carbonaceous chondrite material, and recognize that carbonaceous chondrite meteorites contain amino acids, the buildng blocks of life. Advanced preparation and procedural tips are included. This is lesson 12 of 19 in Exploring Meteorite Mysteries.(View Less)